Sony Ericsson MMR-70 transmitter LED mod for Raspberri Pi

My Raspberry Pi based Internet Radio/Weather Station is going to get a new feature soon - an FM transmitter. You can buy a discontinued Sony Ericsson MMR-70 FM Transmitter for less than 2 EUR now and it can be connected to Raspberry Pi quite easily. Tobias Mädel has done excellent work putting together a small FMBerry daemon which can control MMR-70 connected to RPi's I2C bus. In this case Raspberri Pi is connected directly to I2C pins on Alps TSMZ1-603A FM transmitter (built on NS741 low power FM transmitter chip). Onboard Atmega 32-M is not used and forced to a sleep state to avoid any control conflicts.

MMR-70 has an LED, but it's connected to Mega32 pin 16, so a bit of high precision soldering is required :) To control the LED we need to solder wire directly to the LED or close to Mega32 pin 16:

Making Kodak Vest Pocket Special work again

Short photo-story about Kodak Vest Pocket Special I've got at a huge expense of 1 EUR and restored to perfectly working condition:


Original tick seal leather has gone, a lot of corrosion on aluminium cast body:

Making yet another Internet Radio project with Raspberry Pi

For years I've been using my old looking replica of Bush TR82 radio to listen our local radio stations, but recently I decided to push its reception limits a bit further and upgraded it with help of Raspberry Pi to an Internet Radio.

So, with some extra components from a few broken things now it looks like this:

Actually, it is not just a radio anymore - it is a weather station as well :) It monitors and displays current temperature, pressure and relative humidity. Why? Just because after connecting screen and control buttons I still had a few IO pins available plus it will help me in future to build intelligent house heating system