Hello, I’m Kasidit Yusuf - founder of ClearEvo.com. I started ClearEvo.com back in early 2005 - now it serves to host my personal interest/hobby projects and blog. My brother, Adeeb Yusuf, helps do the support and assembly/delivery operations of EcoDroidLink Bluetooth Acess Point.
I’m a ‘Wireless Protocol Software Engineer’ from Thailand. I’ve been developing software related to wireless protocols since 2004, and commercial mobile network test and measurement software since 2006. Currently my work focuses on development of low-level software for radio-chip access and decoding of GSM, WCDMA (3G) and LTE (4G) radio parameters and Layer-3 messages on Android - for the AZENQOS - AZQ Android Network Testing Solution product/Tools under “Freewill FX Company Limited” in Bangkok, Thailand.
Digitally recoding Telephony Downlink audio, digitally playing wav audio to Telephony Uplink on Qualcomm MSM, MDM and Exynos+MDM (S6 HK) Android phones - for audio quality sample recording (on GSM/WCDMA and VoLTE).
VoLTE SIP full decrypted (behind IPSec) message access and RTP, RTCP packet statistics - on some Android VoLTE phone models - requires kernel and system modificaitons.
Android enterprise software/kernel modifications that can directly read/write modem settings, and directly read/write modem command pipes without going through Android RIL.
Enterprise Android ‘root’ app firmware development - also disbling SELinux and other security features that can block certain engineering access. The kernel modifications that allow ‘root’ access to only certain enterprise apps. Customer simply flashes the ‘custom firmware’ and installs the enterprise app that requires root. Phone is not ‘rooted’ - root checkers would show so. (Nexus 5X, Samsung S6 HK, Samsung S5, Note 4/Edge, Google/LG Nexus 5, etc).
Graduated in Computer Science (BSc) from Kasetsart University, Thailand.
Contact me: Please email
Nowadays, I mostly code pure C - in GNU Emacs! I even write this website in Emacs - using nanoc (in Markdown) and git to manage/upload the site to server. I work mainly using Ubuntu…
Developed a solution to make a Raspberry Pi computer work as a “Bluetooth Network Access Point” for Android”. Developed the “Bluetooth NAP” management software for BlueZ, mixed into a solution on Archlinux ARM - please visit the EcoDroidLink - Android Reverse tethering via Bluetooth page. An EcoDroidLink unit is used in my house and kept always-on (24/7) for many moths and still running strong - providing low-power Bluetooth internet to my Sony Xperia Android phone to enjoy browsing classic Mercedes diesel videos and also watching renewable energy videos on Youtube.
Successfully made about 50 litres of Biodiesel from Waste Vegetable Oil and used it in my w123 Mercedes Benz 300D - Naturally Aspirated - long restoration endeavour and pride too!
Initially used the base transesterification method, then used the Acid-Base method from JourneyToForever - Aleks Kac formula but discontiued as now (2014-2015) ‘used vegetable oil’ is almost or even more expensive than petro-diesel here in Thailand!
Exploring, little by little in my spare time, other methods to work with low-quality high FFA feedstocks.