> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Raspberry Pi High-Precision AD/DA Expansion Board **Type:** Product page · **SKU:** WS-11010 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia) **Page:** https://core-electronics.com.au/raspberry-pi-high-precision-ad-da-expansion-board.html ([markdown](https://core-electronics.com.au/raspberry-pi-high-precision-ad-da-expansion-board.html.md)) Raspberry Pi AD/DA Expansion... ## Pricing - **Price:** $57.05 (inc GST) — $51.86 AUD, exc GST - **Quantity discounts:** 6+ $49.79 (exc GST) · 12+ $48.24 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 1 today, and up to 300 more in 12–19 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-11010:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-11010:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description The Raspberry Pi lacks AD/DA functionality on its GPIO interface, which can be a challenge during development. The High-Precision AD/DA Board solves this issue, adding high-precision AD/DA functions to the Raspberry Pi. ### Features - Standard Raspberry Pi 40PIN GPIO extension header, compatible with Raspberry Pi series boards and Jetson Nano. - Onboard ADS1256, 8-channel 24-bit high-precision ADC (4 differential inputs) with a 30ksps sampling rate. - Onboard DAC8552, 2-channel 16-bit high-precision DAC. - Pinheaders for analog signal input, compatible with Waveshare sensor interface standard for easy sensor module integration. - Screw terminals for analog/digital signal input/output. - Features AD/DA detection circuits for signal demonstration. ### What's on Board ![High-Precision AD/DA Board layout](https://core-electronics.com.au/attachments/localcontent/High-Precision-AD-DA-Board-intro_452739306d1.jpg) 1. **Raspberry Pi GPIO interface:** For connecting with the Raspberry Pi. 2. **AD/DA input/output:** Screw terminals. 3. **AD input:** Pinheaders compatible with Waveshare sensor interface standard for connecting analog sensor modules. 4. **7.68M crystal:** Provides a stable clock source. 5. **LM285-2.5:** Reference voltage provider for the ADC chip. 6. **Photoresistor:** Integrated for demonstrations. 7. **LED output indicator:** For signal activity visualization. 8. **10K potentiometer:** Allows for variable resistance adjustments. 9. **DAC8552:** 16-bit high-precision DAC with 2 channels. 10. **Power indicator:** Displays power status. 11. **ADS1256:** 24-bit high-precision ADC with 8 channels (4 differential inputs). 12. **ADC testing jumper:** For diagnostic purposes. 13. **DAC testing jumper:** For diagnostic purposes. 14. **Power selection jumper:** Configures power input source. 15. **ADC reference ground configuration:** When AD is single-ended, AINCOM acts as a reference terminal and can connect to GND or an external reference voltage. ### Interface Definition | Pin | Symbol | Description | |---|---|---| | 1, 17 | 3.3V | Power supply (3.3V) | | 2, 4 | 5V | Power supply (5V) | | 6, 9, 14, 20, 25, 30, 34, 39 | GND | Ground | | 11 | DRDY | ADS1256 data ready output, low active | | 12 | RESET | ADS1256 reset input | | 13 | PDWN | ADS1256 sync/power off input, low active | | 15 | CS0 | ADS1256 chip select, low active | | 16 | CS1 | DAC8552 chip select, low active | | 19 | DIN | SPI data input | | 21 | DOUT | SPI data output | | 23 | SCK | SPI clock | | 31, 33, 35, 37 | GPIO | Extended to sensor interface | ### Photos - ![High-Precision AD/DA Board back view](https://core-electronics.com.au/attachments/localcontent/High-Precision-AD-DA-Board-2_2429705f14a.jpg) Back view - ![High-Precision AD/DA Board connecting with Raspberry Pi A+](https://core-electronics.com.au/attachments/localcontent/High-Precision-AD-DA-Board-3_35107d10d3b.jpg) Connecting with Raspberry Pi A+ - ![High-Precision AD/DA Board connecting with Raspberry Pi 2 B](https://core-electronics.com.au/attachments/localcontent/High-Precision-AD-DA-Board-4_36930298d66.jpg) Connecting with Raspberry Pi 2 B - ![High-Precision AD/DA Board connecting with sensors](https://core-electronics.com.au/attachments/localcontent/High-Precision-AD-DA-Board-5_381445457db.jpg) Connecting with sensors **Note:** The Raspberry Pi and sensors shown in the images are not included. ### Dimension ![High-Precision AD/DA Board dimensions](https://core-electronics.com.au/attachments/localcontent/High-Precision-AD-DA-Board-size_2751216c6b8.jpg) ### Resources - [Wiki for High-Precision AD/DA Board](https://www.waveshare.com/wiki/High-Precision-AD-DA-Board) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-11010-1.jpg)