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Made at DSL: laser cut topographical map

Made at DSL: laser cut topographical map

After making lots of laser cut boxes, i was wanted to try making a more interesting 3D shape such as a topographical map of my favourite island of Lantau. There are quite a few ways to do this, with the easiest way probably via an STL file but as i’m not familiar with any 3D printing programs… More …

Made at DSL: power meter over WiFi

Made at DSL: power meter over WiFi

DSL gets high electricity bills, that’s why i built an AC power monitor to log the electricity consumption. It is based on the excellent open source OpenEnergyMonitor project which i also use at home (nodes based on Arduino with RF modules). For DSL, i used an ESP8266 to be able to post the data over WiFi straight into the… More …

Mesh Network introduction – CJDNS

Mesh Network introduction – CJDNS

During HackJam this week, we had the visit of Ben from Toronto Mesh. He introduced us the simple and easy way to construct a mesh network based on a network of a few Raspberry Pi2 or Raspberry Pi3. They use the model 2 or 3 from Raspberry Pi because the encryption of the data transfer… More …

Made at DSL: Auduino 4-step sequencer

Made at DSL: Auduino 4-step sequencer

The traditional Arduino boards, with 8 bits at 16MHz are quite limited for sound processing, but the Auduino code, a ‘lo-fi granular synthesizer’, does generate an interesting sound. I combined this with a 4-step sequencer to produce some loops. Each red pot controls the pitch of its step (pentatonic scale). As the Arduino UNO only… More …

Made at DSL: WiFi lantern with RGB strip

Made at DSL: WiFi lantern with RGB strip

Inspired by the RGB LED ceiling lights at DSL, i made a lantern based on the same ESP8266 chip, but using the Arduino IDE to program it. I used the original ESP-01 package which has only a few GPIO pins available but enough for this application. The only other component is a voltage regulator that… More …

Phone Security – HackJam 2016-09-06

Phone Security – HackJam 2016-09-06

Tonight we had the visit of Karsten Nohl from teh German company: Security Research Labs. He presented his work, some of his latest research on a few security issues with mobile communications. Karsten informed us on the SS7 protocol which is an exchange protocol that all mobile communication providers are using to talk to each… More …

Hack your Lantern with Laser #1

Hack your Lantern with Laser #1

The Mid-Autumn Festival must be coming up when mooncakes and lantern specials are all around us. Let’s hack the traditional inspiration by re-imagining the handmade lantern with lasers and LEDs!   Workshop Dates: Sunday, Sep-04 1-3pm Sunday, Sep-11 10-12pm Sunday, Sep-11 1-3pm At this workshop, the children and their parents will hack the traditional Mid-Autumn… More …

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