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ADC-DAC Pi Zero

2 Channel ADC and 2 Channel DAC development board for the Raspberry Pi

The ADC DAC Pi Zero is a 2-channel 12-bit analogue-to-digital converter and a 2-channel 12-bit digital-to-analogue converter designed to work with the Raspberry Pi and other compatible single-board computers.   Designed for the same footprint as the Raspberry Pi Zero, the ADC DAC Pi Zero is also compatible with full-size Raspberry Pi models.

The ADC DAC Pi Zero is based on the Microchip MCP3202 A/D converter containing 2 analogue inputs with a 12-bit resolution and a Microchip MCP4822 dual channel 12-bit DAC with internal voltage reference.

Power to the board is provided through the host Raspberry Pi using the GPIO port. Only one ADC DAC Pi Zero can be used on a Raspberry Pi, but the extended pins on the GPIO connector allow you to stack the ADC DAC Pi Zero along with other development boards. Using our mounting kit, you can securely fit the board on your Raspberry Pi. As the ADC DAC Pi Zero uses the same footprint as the Raspberry Pi Zero, only two mounting holes can be used on the larger Raspberry Pi models.

The A/D and D/A converters communicate with the Raspberry Pi through the SPI interface. 

Max ADC Sample Rate using Python library on a Pi 4: 11,000 samples per second.

Max ADC Sample Rate using C library on a Pi 4: 17,500 samples per second.

Max ADC Sample Rate using C++ library on a Pi 4: 17,500 samples per second.

Max ADC Sample Rate (based on MCP3202 datasheet): 50,000 SPS at 2.7V. 100,000 sps at 5V. ADC-DAC Pi operates at 3.3V on Raspberry Pi.

The ADC DAC Pi Zero is compatible with all Raspberry Pi models from the A+ and B+ onwards.

Not sure which ADC you need? Check our Analogue to Digital Buyers guide to compare our ADC development boards.

For more channels and higher resolution you may move from the 2-channel board to the 8-channel ADC Pi or ADC Differential Pi.

Technical Details

Input Ratings & Specifications

Spec Ratings
Vdd 3.3V
ADC Input Voltage 0V to 3.3V
Maximum ADC Input voltage VSS–0.6V to VDD+0.6 V
DAC Output Voltage Gain = 1: 0V to 2.048V
Gain = 2: 0V to VDD
Maximum DAC Output Current 25mA
SPI voltage 3.3 V

3D CAD Model

Click to downloadADC DAC Pi Zero - 3D CAD File (STEP Format)

Schematic

Click to View
View the schematic PDF.

Mechanical Drawings

Click the image to enlarge.

Compatibility

We have tested the ADC DAC Pi Zero on the following platforms.

Model Status
Raspberry Pi Pico series
Raspberry Pi Model A / B
Raspberry Pi 1 Model A+ / B+
Raspberry Pi 2 Model B
Raspberry Pi 3 Model A+ / B / B+
Raspberry Pi 4 Model B
Raspberry Pi 5
Raspberry Pi Zero
Raspberry Pi Zero W / Zero 2 W
Raspberry Pi Compute Module 4 IO Board
Raspberry Pi 400
Asus Tinker Board

Assembly Instructions

The ADC DAC Pi Zero is supplied with the 40-pin GPIO connector unsoldered. We provide the ADC DAC Pi Zero this way because the Raspberry Pi Zero is also supplied without a GPIO header. The ADC DAC Pi Zero can be fitted above or below the Raspberry Pi Zero.

Before using the ADC DAC Pi Zero, you need to solder the connector onto the PCB.

PCB Header Assembly Jig

Download and print our PCB Header Assembly Jig to hold your circuit board when soldering the header pins.

Use

Datasheets

Code Libraries and Tutorials

We have Python, MicroPython, C, C++, Node.js and Windows 10 IOT libraries for this expansion board.  All of our software libraries are open source and can be download from our GitHub repository or by clicking on the logos below for your selected programming language.

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Important Information

This development board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by abelectronics.co.uk to be a finished end-product fit for general consumer use. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. Persons handling the product(s) must have electronics training and observe good engineering practice standards. This development board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives. Note: documents in Portable Document Format (PDF) require Adobe Acrobat Reader 5.0 or higher to view, download Adobe Acrobat Reader or other PDF reading software for your computer or mobile device.

Shipping and Delivery

For orders under £35 and tracked orders, the following delivery charges apply.

Shipping Rates

United Kingdom

Service Cost  Estimated Delivery Time 
Royal Mail 1st Class £3.29 1 - 3 days (Mon - Sat)
Royal Mail Special Delivery (Tracked) £8.49 Next day (Mon - Sat)

European Union

Deliveries to: Austria, Belgium, Bulgaria, Croatia, Republic of Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden. 

Service Cost  Estimated Delivery Time 
Royal Mail Airmail Service £4.29 3-5 Working Days **
Royal Mail International Tracked and Signed £12.99 3-5 Working Days **

Rest of the World

Service Cost  Estimated Delivery Time 
Royal Mail Airmail Service £5.99 5-7 Working Days **
Royal Mail International Tracked and Signed £18.99 5-7 Working Days **

* Free delivery uses the Royal Mail 1st Class service for UK orders and Royal Mail Airmail Service for international orders.

** All International destinations are subject to customs clearance at the destination country, which can add a short delay to your delivery times. Additional import duty may be charged for your order by customs on arrival to your country based on the order value.

We have a full list of all available delivery destinations on the Shipping Country List.

We aim to dispatch your order within 1 working day.  

Working days are normal weekdays; dispatch times do not include Saturdays, Sundays and national holidays. Delivery transit times do not include national holidays and Sundays but may include Saturdays, depending on the delivery service provider in the destination country.

You can view details of international shipping issues and delays with the Royal Mail airmail service at Royal Mail International Incident Bulletin.

You can check the status of your order by going to the My Account area of the website.

Import One-Stop Shop (IOSS) FAQ

What is the Import One-Stop Shop (IOSS)?

The Import One-Stop Shop (IOSS) is a system introduced by the European Union to simplify VAT collection for goods valued at €150 or less that are shipped to customers in the EU from outside the EU. By using IOSS, sellers collect VAT at the point of sale, ensuring that buyers do not have to pay additional import taxes or customs fees upon delivery.

How does IOSS benefit me as a customer?

IOSS makes your shopping experience easier and more transparent by:

Including VAT in the purchase price you see at checkout.

Eliminating unexpected customs charges or fees upon delivery.

Reducing potential delivery delays caused by customs clearance.

Will I have to pay any additional charges when my order is delivered?

No. If your order is covered by IOSS, all applicable VAT and import charges are already included in the price you pay at checkout. There will be no additional charges when your order is delivered.

How do I know if my order is covered by IOSS?

All orders shipped to EU countries and valued at €150 or less are covered by our IOSS registration. If your order qualifies, the VAT and import fees will be automatically calculated and included in the total price during checkout.

Does IOSS apply to all products?

IOSS applies to goods valued at €150 or less that are shipped from outside the EU to customers in EU member states. Certain items, such as excisable goods (e.g., alcohol or tobacco), may not qualify for IOSS coverage.

What happens if my order exceeds €150?

For orders valued above €150, IOSS does not apply. In such cases, import VAT and any applicable customs duties will need to be paid separately, usually upon delivery. We recommend checking your local regulations for further details.

Do I need to do anything to use IOSS?

No action is required on your part. We handle all the necessary IOSS processes on our end to ensure your order is VAT-compliant and free from additional import fees.

Does IOSS reduce delivery times?

Yes, IOSS can help speed up delivery times by streamlining the customs clearance process. Since VAT is prepaid, your order is less likely to be delayed during customs inspections.

Is IOSS available in all EU countries?

Yes, IOSS applies to all EU member states. Regardless of where you are in the EU, you can enjoy the benefits of IOSS when shopping with us.

Can I claim VAT back if I am VAT registered in the EU?

If you are VAT registered in the EU and wish to claim VAT back, please use the Guest Checkout and enter your VAT registration details before placing your order. It is not possible to enter your VAT details when using the PayPal express checkout.

What should I do if I still have questions?

If you have any further questions about IOSS or your order, feel free to contact our customer support team. We’re here to help!

Delivery Duty Unpaid for orders sent outside of the United Kingdom and EU over 150 euros

All orders sent to countries other than the United Kingdom and EU over 150 euros are shipped on a DDU (Delivery Duty Unpaid) basis, and the recipient may be subject to local taxes and customs import duty, which is charged on the value of the order.

Payment of these fees is the sole responsibility of the customer. 

Order Tracking

Our standard shipping service is not tracked, and we cannot supply tracking information for your order.

We can offer alternative shipping using Royal Mail, tracked and signed for service. You can select this option at checkout. Please note full end-to-end tracking depends on the tracking service from the regional postal service in the destination country.

Once your order has been sent, you can view your tracking code, which is available in the My Account section. Please allow up to 72 hours for your tracking code to be added to your order after despatch.

Returns, refunds and your right to withdraw

Two things apply to your order: your statutory rights as a consumer, and our 180-day returns guarantee on top of them. We never use the guarantee to reduce your legal rights — where the law gives you more, the law applies.

Your right to withdraw (consumers)

If you bought from us as a consumer, you have 14 days to change your mind for any reason, without needing to keep the item sealed.

The 14 days run from the day you, or someone you nominate, received the goods. Where an order arrives in separate deliveries, the period runs from the day you received the last item.

To withdraw, use our withdrawal function, labelled "Withdraw from contract here", in the My Account area under your order. If you checked out as a guest, use the link in your order confirmation email and verify your order number and email address. You can also tell us in any other clear statement, such as an email. Either way, we'll send you a timestamped acknowledgement by email.

You may open and inspect a board to check it works, as you would in a shop, and still withdraw. You don't have to keep it unopened to exercise this right. You may be liable for any reduction in the item's value caused by handling beyond what's needed to establish how it works.

Once you withdraw, we refund the price you paid plus the standard outbound delivery cost, within 14 days. We may hold the refund until we've received the goods back, or until you show proof you've sent them. You're responsible for the cost of returning the items, and the parcel is your responsibility until it reaches us, so we recommend a tracked or insured service.

Some items are excluded from the statutory right to withdraw, for example goods made or configured to your specification. We'll make this clear before you order where it applies.

Faulty items

Separately from the right to withdraw, if a board is faulty or not as described, your statutory rights apply. Consumers in the EU have a legal guarantee of two years from delivery. All Raspberry Pi add-on boards are tested during production, and all inputs and outputs are checked to ensure they are within the specified ratings. We cannot accept returns for faults caused by over-voltage applied to the inputs by the purchaser, as this is damage rather than a fault.

Our 180-day returns guarantee

In addition to your statutory rights, if for any reason you are unhappy with your purchase you may return it within 180 days of the date you received it, in its original condition and unopened, with any seals and shrink-wrap intact, and we will issue a full refund for the price you paid. This guarantee is our own, beyond what the law requires, which is why it asks for items to be unopened. Opened items can only be accepted under this guarantee if they are faulty.

When returning an item, please state why you are returning it and whether you want a refund or an exchange.

Business customers

The right to withdraw applies to consumers. Orders placed in the course of a business, including boards bought as components for incorporation into other products, are not covered by the consumer right to withdraw. Our 180-day guarantee still applies as set out above.

Refunds

The time a refund takes to reach you depends on the banks involved, but it would normally take 3 to 5 working days to complete once issued.

Your statutory rights

Nothing in this policy affects or limits your statutory rights. Where our terms are more generous than the law requires, the more generous terms apply; where the law gives you more, the law applies. Customers in the United Kingdom have an equivalent 14-day cancellation right under the Consumer Contracts Regulations 2013.

Removed Delivery Destinations

We regret that we had to remove the following countries from our delivery destinations due to a very high failure rate of our parcels being delivered using the Royal Mail airmail service. This resulted in us refunding all of the missing orders, and we cannot continue to make such large losses by sending parcels to destinations where a large percentage of the items are lost in the postal systems.

Brazil, China, Israel, Mexico, Saudi Arabia, Singapore, Sri Lanka, Taiwan, Turkey and the United Arab Emirates.

Also, due to problems with the courier delivering parcels to these destinations, we cannot use a third-party courier service for these delivery destinations due to the extra costs involved.

Customers can purchase our products from one of our international resellers