Sergey Kiselev designed this I2S Audio pHAT:
skiselev/i2s_audio_phatThis is a Raspberry Pi Zero pHAT form-factor I2S audio interface board based on a Cirrus Logic (Wolfson) WM8731 audio codec. It provides line input, line output, headphones output, and includes an on-board microphone.
Ever since Nokia 3310 / 5110 display board I’ve wanted to slap on an ESP module and some buttons to make a nice little portable handheld. Now with some googling and checking out other projects how they get their stuff done and a bit time on hand while on vacation I’m using every spare minute to work on this PCB. There are some minor things I’m not sure about that need testing, but the general concept is clear.
Sean Hodgins designed this open source balancing robot to help teach PID control:
The PIDDYBOT is currently using a Atmega32u4 microncontroller. It uses 3 potentiometers that allow you to manually tune the PID loop to get the robot balancing. This allows you to see how each term affects the performance of the system. It is a great teaching tool for the classroom and is currently being used by students at McMaster University.
The Idea CC1101 is a cheap, sophisticated and small transceiver which works in different frequencies: 315, 433, 868, and 915 MHz, but can easily be programmed for operation at other frequencies 300-348 MHz, 387-464 MHz and 779-928 MHz. If we compare it with other transceivers in the market, the low cost is enormous. Mainly, the […]
via CC1101 Transceiver & Raspberry Pi — Salvador Mendoza Blog
Our guest for this week’s Hack Chat will be [Piotr Esden-Tempski], developer of UAV autopilot hardware for Paparazzi UAV. Paparazzi can be used for autonomous flight and control of multiple aircraft, and we’ll be talking about the types of embedded systems that can be used for these applications. [Pitor] is also the developer of the 1Bitsy ARM dev platform, the Black Magic Probe JTAG/SWD programmer/debugger and the founder of 1BitSquared.
A PCB-layout-only remix of 1BitSquared/Black Sphere Technologies’ excellent Black Magic Probe v2.1. Designed to replace the fingerprint reader in the palm rest on some Thinkpads, because when have you _not_ needed an ARM debugger with a built-in UART port?
Runs stock firmware and grabs USB from the fingerprint reader’s FFC connector (well… +5VDC from the touchpad). Not tested on anything other than my X220 (but it seems to work!). Cable harnesses get stuffed in the o’l ExpressCard slot for storage.
LEGO’s Power Functions elements mostly consist of DC motors and the hardware to be driven by those motors like gears and wheels. They also include battery packs, usually a bunch of AA cells in a plastic box. One of the challenges of the system — for hackers, anyway — is interfacing with the product line’s…
via LiPo Added to LEGO Power Functions Power Brick — Hackaday
We’re challenging you to make the best whatever. It’s time for the Anything Goes round of the Hackaday Prize. This is your final chance to enter and we’re looking for just about anything! Twenty entries from Anything Goes will receive a $1,000 cash prize and a chance at the $50,000 grand prize and four other top prizes. Over the…
via It’s Time For Anything Goes In The Hackaday Prize — Hackaday
Today, we’re excited to announce the winners of the Assistive Technologies portion of The Hackaday Prize. In this round, we’re looking for projects that will help ensure a better quality of life for the disabled. Whether this is something that enhances learning, working, or daily living. These are the projects that turn ‘disability’ into ‘this ability’.…
via These Twenty Assistive Technologies Projects Won $1000 In The Hackaday Prize — Hackaday
Sometimes you see an excellent post somewhere else on the web, and then discover that it is one of a series of similarly good posts that you completely missed when they were published. If you are a Hackaday scribe you are left wondering how you managed to pass them by, and then why on earth…
OSH Park 